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CN-122014598-A - Directional output internal gear pump

CN122014598ACN 122014598 ACN122014598 ACN 122014598ACN-122014598-A

Abstract

The invention relates to the field of gear pumps, and particularly discloses a directional output internal gear pump which comprises a pump body, a directional input assembly, a motor and a gear box, wherein the directional input assembly is fixed on the pump body and is in power connection with a main shaft of the pump body, the power transmission assembly is used for transmitting the power of a gear box of a wind generating set to a first input shaft so as to enable two unidirectional wheels to rotate, and through the unidirectional rotation effect of a ratchet mechanism, one of two reversing bevel gears rotates in one direction or the opposite direction no matter the bevel gear shaft rotates in the forward direction or the reverse direction, so that the output bevel gear can be driven to rotate in the same direction at all, the main shaft of the pump body can rotate in a directional mode, the motor can adjust the rotation direction of an output shaft of the motor according to the rotation speed of a second input shaft so as to adjust the distance between two small fixed rings, and the diameter of a circumcircle of a plurality of clamping plates is adjusted, and the transmission ratio between a transmission adjusting mechanism and a transmission belt wheel is changed, so that the rotation speed of the first input shaft is controlled to be stabilized within a certain range.

Inventors

  • LIU DIHUA
  • LIU YOULUN
  • ZHANG JIANFU

Assignees

  • 奥冠机械(宁波)有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (9)

  1. 1. A directional output internal gear pump, comprising: a pump body (1); The directional input assembly is fixed on the pump body (1) and is in power connection with a main shaft of the pump body (1), the directional input assembly comprises a mounting plate (10), an output bevel gear (12), a reversing bevel gear (13), a bevel gear shaft (19), an intermediate bevel gear (16), an input bevel gear (14) and a first input shaft (15), wherein the mounting plate (10) is fixed on the pump body (1), the main shaft of the pump body (1) penetrates through the mounting plate (10) and is fixedly connected with the output bevel gear (12), two rod seats (17) symmetrically arranged on two sides of the output bevel gear (12) are fixed on the mounting plate (10), the bevel gear shaft (19) penetrates through the two rod seats (17) and is in rotary connection with the two rod seats, the reversing bevel gear (13) is provided with two ratchet mechanisms which are in rotary connection with the bevel gear shaft (19) and are meshed with the output bevel gear (12) at the same time, the bevel gear shaft (19) is fixedly provided with two ratchet mechanisms which can respectively drive the two reversing bevel gears (13) to rotate towards opposite directions, the intermediate bevel gear (16) is fixed on the bevel gear shaft (19) and is positioned between the two reversing bevel gears (13) and the main shaft (1), the input bevel gear (14) is fixed on the first input shaft (15) and meshed with the intermediate bevel gear (16); the first shell (11) is fixed on the mounting plate (10), the directional input assembly is arranged in the first shell (11), and the first input shaft (15) is rotationally connected to the front side wall of the first shell (11); and the power transmission assembly is fixed on the first shell (11) and is used for connecting a gearbox output shaft in the wind generating set with the first input shaft (15).
  2. 2. A directional output internal gear pump according to claim 1, characterized in that the power transmission assembly comprises a gear ratio adjustment member in power connection with the first input shaft (15), and a power transmission member, the power input of which is provided by the gearbox output shaft in the wind power plant and via which power is transmitted to the first input shaft (15), the power transmission assembly being adapted to adjust the gear ratio of the gear ratio adjustment member in dependence on the rotational speed of the gearbox output shaft.
  3. 3. The directional output internal gear pump according to claim 1, wherein the ratchet mechanism comprises a unidirectional wheel (70), a pawl (71) and a first spring (73), a mounting groove (132) recessed towards one side close to the middle bevel gear (16) is formed in the end face of one side of the reversing bevel gear (13) far away from the middle bevel gear (16), the unidirectional wheel (70) is arranged in the mounting groove (132) and is fixed on the bevel gear shaft (19) and rotates along with the bevel gear shaft (19), a plurality of limit grooves (131) which are uniformly distributed in the circumferential direction are formed in the side wall of the mounting groove (132), a plurality of containing grooves (72) which are uniformly distributed in the circumferential direction and recessed towards one side close to the bevel gear shaft (19) are formed in the periphery of the unidirectional wheel (70), a plurality of containing grooves (72) are respectively connected into the containing grooves (72) in a rotating mode, a first spring (73) is fixed between the containing grooves (72) and one side wall of the containing groove (72) close to the bevel gear shaft (19), the end of the pawl (72) is enabled to be positioned in the limit groove (131) in parallel to the other end of the limit groove (71) when the end of the pawl (71) is positioned in the limit groove (131), pawls (71) on the two unidirectional wheels (70) face opposite directions.
  4. 4. The directional output internal gear pump according to claim 2, wherein the transmission ratio adjusting component comprises a transmission belt wheel (40), a transmission belt (41), a second shell (20) and a transmission adjusting mechanism (5), the transmission belt wheel (40) and the transmission adjusting mechanism (5) are in power connection through the transmission belt (41), a plurality of belt teeth (411) distributed along the path of the transmission belt wheel (41) at equal intervals are fixedly arranged on the inner side surface of the transmission belt (41), a plurality of evenly distributed grooves are formed in the periphery of the transmission belt wheel (40), and when the transmission belt (41) abuts against the periphery of the transmission belt wheel (40), the belt teeth (411) are clamped into the grooves.
  5. 5. The directional output internal gear pump according to claim 4, wherein the transmission adjusting mechanism (5) comprises a small fixed ring (52), a large fixed ring (50) and a transmission member (8), the large fixed ring (50) is symmetrically arranged in two, the small fixed ring (52) is symmetrically arranged in two and is positioned between the two large fixed rings (50), the diameter of the small fixed ring (52) is smaller than the diameter of the large fixed ring (50), and the transmission member (8) is provided with a plurality of small fixed rings and is uniformly distributed circumferentially with the axis of the large fixed ring (50) as the center; The transmission part (8) comprises a clamping plate (81) and inclined rods (82), a clamping groove (85) which is sunken towards one side close to the axis of the small fixed ring (52) is formed in one side, far away from the axis of the small fixed ring (52), of the clamping plate (81), two connecting sliding seats (84) which are symmetrically arranged in the center are fixedly arranged on one side, close to the axis of the small fixed ring (52), of the clamping plate (81), through grooves (83) are formed in the connecting sliding seats (84), the inclined rods (82) are provided with two through grooves (83) and are respectively connected in the two through grooves (83) in a sliding mode, the two inclined rods (82) are arranged in a crossed mode, two ends of one inclined rod (82) are respectively fixed on a large fixed ring (50) and a small fixed ring (52) far away from one side of the large fixed ring (50), two ends of the other inclined rod (82) are respectively fixed on the other side of the large fixed ring (50) and the small fixed ring (52) far away from one side of the large fixed ring (50), and the crossing position of the two inclined rods (82) is changed by adjusting the distance between the two small fixed rings (52), so that a connecting sliding seat (84) slides along the corresponding inclined rod (82), and the distance between a clamping plate (81) and the axis of the small fixed ring (52) is changed; guide inclined planes (4111) are formed at two ends of the belt teeth (411) and are respectively abutted against two inclined rods (82) which are obliquely arranged.
  6. 6. The directional output internal gear pump according to claim 5, characterized in that a collar (57) coaxial with the small fixed rings (52) is arranged between the two small fixed rings (52), the collar (57) is fixed on the first input shaft (15), the first input shaft (15) penetrates through the small fixed rings (52), the large fixed rings (50) and the tail end of the large fixed rings is fixed with a fixed disc (53), two screw rods (51) penetrating through the small fixed rings (52) on two sides are rotationally connected with the collar (57), the screw rods (51) are in threaded connection with the small fixed rings (52), one end, far away from the first shell (11), of the screw rods (51) penetrates through the collar (57) and is in rotary connection with the screw rods, one side, far away from the collar (57), of the fixed disc (53) is fixed with a motor base (54), two connecting rods (56) are fixed between the motor base (54), and two belt ends of the screw rods (51) are driven by the output shafts of the motor (55).
  7. 7. The directional output internal gear pump according to claim 4, wherein the power transmission component comprises an intermediate transmission shaft (31), a toothed belt wheel (33), a toothed belt wheel (32) and a second input shaft (30), one end of the intermediate transmission shaft (31) is fixed in a transmission belt wheel (40), two toothed belt wheels (33) are arranged, the toothed belt wheel (33) is fixed on the other end of the intermediate transmission shaft (31), the second input shaft (30) penetrates through the cover plate (21) and is in rotary connection with the cover plate, the second input shaft (30) is coaxially arranged with the first input shaft (15), the other toothed belt wheel (33) is fixed on one end, close to the first input shaft (15), of the second input shaft (30), and the two toothed belt wheels (33) are in power connection through the toothed belt wheel (32).
  8. 8. The directional output internal gear pump according to claim 7, wherein a fixed block (37) is fixed on the lower side wall of the second housing (20), a guide post (35) is fixed between the fixed block (37) and the side wall of the second housing (20), a sliding block (34) is connected to the guide post (35) in a sliding manner, the lower end surface of the sliding block (34) is abutted to the lower side wall of the second housing (20), a second spring (38) is fixed between the sliding block (34) and the fixed block (37), an axle seat (36) is fixed on the upper end surface of the sliding block (34), and the middle transmission shaft (31) penetrates through the axle seat (36) and is connected with the axle seat in a rotating manner.
  9. 9. The directional output internal gear pump according to claim 8, wherein a sliding rod (63) is fixed on the upper side wall of the second housing (20), a tensioning wheel seat (61) is slidably connected on the sliding rod (63), a tensioning wheel (60) is rotatably connected at the lower end of the tensioning wheel seat (61), the tensioning wheel (60) is abutted to the toothed belt (32), so that the toothed belt (32) is always in a tight state, and a third spring (62) is fixed between the tensioning wheel seat (61) and the upper side wall of the second housing (20).

Description

Directional output internal gear pump Technical Field The invention relates to the field of gear pumps, in particular to a directional output internal gear pump. Background In wind power plants, the gearbox is a critical transmission component whose reliable operation relies on a continuous, stable supply of lubricating oil. Under severe natural conditions, rapid changes in wind direction may cause the rotor blades to produce negative torque, which in turn causes transient reversals in the gearbox input shaft. For a conventional internal gear pump driven directly by the main shaft of a gearbox, the pumping direction is fixedly coupled with the main shaft steering. Once the main shaft is reversed, the oil outlet direction of the pump is reversed, so that oil cannot be normally supplied to the gear box, and oil can be sucked from a gear box lubrication pipeline, so that dangerous oil backflushing phenomenon is caused. This will lead to a momentary loss of lubrication and cooling of gears and bearings running at high speed, a major failure which is very likely to cause severe wear and even rejection of equipment. In addition, the operating speed range of the wind generating set is wide, and the rotating speed of the output shaft of the gear box can fluctuate along with the change of wind speed. The direct driving of the oil pump causes great fluctuation in the rotational speed and displacement of the pump, which is unfavorable for forming stable lubricating oil pressure and flow, and affects the lubricating effect. Disclosure of Invention The object of the present invention is to provide a directional output crescent gear pump which overcomes the above-mentioned drawbacks of the prior art. According to the invention, a directional output internal gear pump comprises: a pump body; The directional input assembly is fixed on the pump body and is in power connection with a main shaft of the pump body, the directional input assembly comprises a mounting plate, an output bevel gear, a reversing bevel gear, a bevel gear shaft, an intermediate bevel gear, an input bevel gear and a first input shaft, the mounting plate is fixed on the pump body, the main shaft of the pump body penetrates through the mounting plate and is fixedly connected with the output bevel gear, two rod seats symmetrically arranged on two sides of the output bevel gear are fixed on the mounting plate, the bevel gear shaft penetrates through the two rod seats and is in rotary connection with the two rod seats, the reversing bevel gear is provided with two ratchet mechanisms and is in rotary connection with the bevel gear shaft and is meshed with the output bevel gear at the same time, the bevel gear shaft is fixed with the two ratchet mechanisms and can drive the two reversing bevel gears to rotate in opposite directions respectively, the intermediate bevel gear is fixed on the bevel gear shaft and is positioned between the two reversing bevel gears, the first input shaft and the main shaft of the pump body are coaxially arranged, and the input bevel gear is fixed on the first input shaft and is meshed with the intermediate bevel gear; The first shell is fixed on the mounting plate, the directional input assembly is arranged in the first shell, and the first input shaft is rotationally connected to the front side wall of the first shell; and the power transmission assembly is fixed on the first shell and is used for connecting a gearbox output shaft and a first input shaft in the wind generating set. The power transmission component is in power connection with the first input shaft, the power input of the power transmission component is provided by a gear box output shaft in the wind generating set, the power is transmitted to the first input shaft through the power transmission component, and the power transmission component can adaptively adjust the transmission ratio of the power transmission component according to the rotating speed of the output shaft of the gear box. Preferably, the ratchet mechanism comprises a unidirectional wheel, a pawl and a first spring, wherein a side end surface of the reversing bevel gear far away from the middle bevel gear is provided with a mounting groove which is sunken towards one side close to the middle bevel gear, the unidirectional wheel is arranged in the mounting groove and fixed on the bevel gear shaft and rotates together with the bevel gear shaft, a plurality of limit grooves which are uniformly distributed in the circumferential direction are formed in the side wall of the mounting groove, a plurality of holding grooves which are uniformly distributed in the circumferential direction and sunken towards one side close to the bevel gear shaft are formed in the periphery of the unidirectional wheel, the pawl is provided with a plurality of holding grooves and is respectively connected in a rotating manner, a first spring is fixed between the holding groove and one side wall of the holding groove close to t